docs: Add .readthedocs.yaml

Merge pull request #145 from DSD-DBS/docs-add-rtd

docs/.readthedocs.yaml

@@ -0,0 +1,23 @@
+# SPDX-FileCopyrightText: 2022 Copyright DB InfraGO AG and the capellambse-context-diagrams contributors
+# SPDX-License-Identifier: Apache-2.0
+
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    nodejs: "20"
+    python: "3.12"
+
+mkdocs:
+  configuration: mkdocs.yml
+
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs